Unstable in plus (+) frame type

Hi everyone,
I built my quadrotor is cross frame type and it did okay. Now, I changed the frame type to plus and the system is unstable. Does anyone have any idea that why this happens?

Did you change the way the controller was mounted?

Yes, board and compass need to be aligned to frame, you can’t just selct between + and x and expect it to work, if indeed that is what you have done.

Thank you very much. I changed the orientation and now it works.